Ultra-Span Whatever your needs, MiTek’s Ultra-Span has got you covered.eCo Fasteners eCo Fasteners set the benchmark in timber and steel construction.Connector Plates MiTek is the world’s leading supplier of connector plates.Timeline Founded in 1955 and a Berkshire Hathaway company since 2001.The Company MiTek is the industry leader in every market we serve worldwide.